A bad day compels Penny to re-evaluate her choices - including Leonard; Bernadette and Howard must care for Mrs. Wolowitz; Sheldon gives Raj advice on relationships.

While being filmed by George Green, Bubbles gets his oil production going to make enough money to buy the trailer park for Barb and Julian.

The boys sell their entire honey oil output to Sebastian Bach; Julian has to do something truly terrible.

Raj struggles with guilt when he dates two women at once; Penny has a chance to play a part in a cheesy movie; Sheldon is torn between two gaming systems.

Sheldon has a personal crisis when he decides string theory is a waste of his time; a double date ends in embarrassment for Howard.

Sheldon gives spontaneity a try, which causes unexpected friction for Penny, Bernadette and Amy; Raj asks Howard for help with preparation for a date with Emily.

A bad day compels Penny to re-evaluate her choices - including Leonard; Bernadette and Howard must care for Mrs. Wolowitz; Sheldon gives Raj advice on relationships.

While being filmed by George Green, Bubbles gets his oil production going to make enough money to buy the trailer park for Barb and Julian.

The boys sell their entire honey oil output to Sebastian Bach; Julian has to do something truly terrible.

Sheldon gets a summer job at the local train museum; Missy embarks on a new stage of womanhood; Georgie discovers Mary's guilty pleasure.

With college in sight, Sheldon is determined to ride his bike without training wheels; Mary and George Sr. argue over parenting styles.

Professor Proton (Bob Newhart) helps Sheldon deal with grief; Leonard gets into a competition with Penny; Bernadette and Amy prepare a "Star Wars Day" gift for the guys.

A bad day compels Penny to re-evaluate her choices - including Leonard; Bernadette and Howard must care for Mrs. Wolowitz; Sheldon gives Raj advice on relationships.

A fire at Ben's hardware store causes a major setback for the family; Becky feels enormous pressure to help every single patient at her mental health facility internship.

Dan achieves a major financial milestone, making him reconsider his belief in the Conners curse; Mark finds out some news that causes him to reevaluate his future.

Brent and Lacey sponsor Davis' football team; Karen's reckless driving puts Hank in the driver's seat.

Brent offers self-serve; Lacey goes buffet style at the Ruby.

The air conditioner breaks at Corner Gas; Karen and Davis win the meat lottery.

Karen's reputation as a woman of the law is marred when an accidental muffin incident causes chaos for the team.

Oscar and Emma enjoy Lacey's company in their new hot tub a lot more than Lacey enjoys theirs; the police department introduces Safety Pete.

Wanda becomes a reporter for the Howler; Brent takes guitar lessons.

Faced with an uncertain future, Sheldon considers a major change; Emily and Raj decide to take things to the next level.

Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.

When Sheldon must teach a class, Howard decides to take it; Amy takes advantage of the tension between Penny and Bernadette.

Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game; Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.

Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny; the guys think about becoming part owners in Stuart's store.

During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.

Raj and Sheldon try to simulate a dark-matter research expedition; after a fight about money, Penny and Leonard turn to Bernadette and Wolowitz for advice.

The guys try to help when Penny is faced with an awkward dilemma at work; Bernadette and Amy discuss sexuality and female scientists.

Sheldon feels pressured to participate in romantic traditions when the gang re-creates a high-school prom on the roof.

Leonard has minor surgery on his nose, causing Sheldon to overreact; Bernadette and Howard work on their marriage.

Sheldon says goodbye to Fun With Flags; Howard, Leonard and Raj look through their dead professor's research; Bernadette learns her co-workers' true feelings.

When the guys agree to do something the girls like, Sheldon and Leonard end up having a confrontation.

Sheldon asks his friends to challenge him in hope of achieving a scientific breakthrough; Wolowitz invents a game about Raj.

Sheldon and Leonard must defend themselves from an online bully's criticism after they co-publish a paper; Bernadette, Penny and Amy confront embarrassing moments during a girls night.

Faced with an uncertain future, Sheldon considers a major change; Emily and Raj decide to take things to the next level.

Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.

When Sheldon must teach a class, Howard decides to take it; Amy takes advantage of the tension between Penny and Bernadette.

Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game; Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.

Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny; the guys think about becoming part owners in Stuart's store.

During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.

Raj and Sheldon try to simulate a dark-matter research expedition; after a fight about money, Penny and Leonard turn to Bernadette and Wolowitz for advice.

The guys try to help when Penny is faced with an awkward dilemma at work; Bernadette and Amy discuss sexuality and female scientists.

Sheldon feels pressured to participate in romantic traditions when the gang re-creates a high-school prom on the roof.

Leonard has minor surgery on his nose, causing Sheldon to overreact; Bernadette and Howard work on their marriage.

Sheldon says goodbye to Fun With Flags; Howard, Leonard and Raj look through their dead professor's research; Bernadette learns her co-workers' true feelings.

When the guys agree to do something the girls like, Sheldon and Leonard end up having a confrontation.

Sheldon asks his friends to challenge him in hope of achieving a scientific breakthrough; Wolowitz invents a game about Raj.

An ensemble of British actors and comedians performs in a series of sketches alongside celebrity guest hosts and popular musical acts in a UK version of the groundbreaking live show.

Sheldon and Leonard must defend themselves from an online bully's criticism after they co-publish a paper; Bernadette, Penny and Amy confront embarrassing moments during a girls night.

Faced with an uncertain future, Sheldon considers a major change; Emily and Raj decide to take things to the next level.

Sheldon asks his friends to challenge him in hope of achieving a scientific breakthrough; Wolowitz invents a game about Raj.

Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.

When Sheldon must teach a class, Howard decides to take it; Amy takes advantage of the tension between Penny and Bernadette.

Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game; Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.

Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny; the guys think about becoming part owners in Stuart's store.

During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.

Raj and Sheldon try to simulate a dark-matter research expedition; after a fight about money, Penny and Leonard turn to Bernadette and Wolowitz for advice.

The guys try to help when Penny is faced with an awkward dilemma at work; Bernadette and Amy discuss sexuality and female scientists.

Sheldon feels pressured to participate in romantic traditions when the gang re-creates a high-school prom on the roof.

Leonard has minor surgery on his nose, causing Sheldon to overreact; Bernadette and Howard work on their marriage.

Sheldon says goodbye to Fun With Flags; Howard, Leonard and Raj look through their dead professor's research; Bernadette learns her co-workers' true feelings.

When the guys agree to do something the girls like, Sheldon and Leonard end up having a confrontation.

Sheldon asks his friends to challenge him in hope of achieving a scientific breakthrough; Wolowitz invents a game about Raj.

Sheldon and Leonard must defend themselves from an online bully's criticism after they co-publish a paper; Bernadette, Penny and Amy confront embarrassing moments during a girls night.

Brent tries to prove he is the biggest Saskatchewan Roughriders fan.

Oscar kicks off the New Year with startling news about his national identity; the gang gets involved in a resolution contest.

Brent pleads with Hank not to embarrass him when they go to see Brent's favorite comic book writer.

After an incident leaves the townsfolk puzzled, Karen tries to convince the entire town that she is not actually a crazy cat lady.

Davis is sent to a sensitivity course after making too many blonde jokes.

Brent finds a creative way to get through a week of no TV with the help of Hank and Wanda.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiancé and finds that she is attracted to him.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

Ross' new girlfriend wants to put their photograph on Christmas cards; Rachel eyes Joey as a possible partner.

Rachel and Joey might become more than friends; Chandler sets a Ms. Pac-Man record; Ross breaks land-speed records.

Joey might declare his love for Rachel, or Phoebe; Rachel breaks a pact with Ross; Chandler becomes mister bubble bath.

Joey realizes his intense feelings for Rachel are excluding Ross from the joys of impending fatherhood.

Monica prepares a memorable St. Valentine's Day for Chandler with sexy lingerie and X-rated entertainment.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiancé and finds that she is attracted to him.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

Ross' new girlfriend wants to put their photograph on Christmas cards; Rachel eyes Joey as a possible partner.

Rachel and Joey might become more than friends; Chandler sets a Ms. Pac-Man record; Ross breaks land-speed records.

Joey might declare his love for Rachel, or Phoebe; Rachel breaks a pact with Ross; Chandler becomes mister bubble bath.

Joey realizes his intense feelings for Rachel are excluding Ross from the joys of impending fatherhood.

Monica prepares a memorable St. Valentine's Day for Chandler with sexy lingerie and X-rated entertainment.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiancé and finds that she is attracted to him.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

Ross' new girlfriend wants to put their photograph on Christmas cards; Rachel eyes Joey as a possible partner.

Rachel and Joey might become more than friends; Chandler sets a Ms. Pac-Man record; Ross breaks land-speed records.

Joey might declare his love for Rachel, or Phoebe; Rachel breaks a pact with Ross; Chandler becomes mister bubble bath.

Joey realizes his intense feelings for Rachel are excluding Ross from the joys of impending fatherhood.

Monica prepares a memorable St. Valentine's Day for Chandler with sexy lingerie and X-rated entertainment.

The sleepy Saskatchewan town of Dog River is in the middle of nowhere, and the residents like it that way just fine. Brent's the guy who owns the only gas station around, and it happens to be attached to the only coffee shop. Police officers Davis and Karen are always on the prowl in this little nook of a prairie town.

The sleepy Saskatchewan town of Dog River is in the middle of nowhere, and the residents like it that way just fine. Brent's the guy who owns the only gas station around, and it happens to be attached to the only coffee shop. Police officers Davis and Karen are always on the prowl in this little nook of a prairie town.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

The sleepy Saskatchewan town of Dog River is in the middle of nowhere, and the residents like it that way just fine. Brent's the guy who owns the only gas station around, and it happens to be attached to the only coffee shop. Police officers Davis and Karen are always on the prowl in this little nook of a prairie town.

The sleepy Saskatchewan town of Dog River is in the middle of nowhere, and the residents like it that way just fine. Brent's the guy who owns the only gas station around, and it happens to be attached to the only coffee shop. Police officers Davis and Karen are always on the prowl in this little nook of a prairie town.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

The sleepy Saskatchewan town of Dog River is in the middle of nowhere, and the residents like it that way just fine. Brent's the guy who owns the only gas station around, and it happens to be attached to the only coffee shop. Police officers Davis and Karen are always on the prowl in this little nook of a prairie town.

The sleepy Saskatchewan town of Dog River is in the middle of nowhere, and the residents like it that way just fine. Brent's the guy who owns the only gas station around, and it happens to be attached to the only coffee shop. Police officers Davis and Karen are always on the prowl in this little nook of a prairie town.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

The first made-for-Canada TV series to be broadcast on a major U.S. network, "Just for Laughs" incorporates practical jokes, hidden cameras and the spontaneous reaction of unsuspecting "victims" to cut across cultural boundaries of humor. The series is seen in 125 countries around the world, including England, France, Italy, Germany and Canada, among others.

The first made-for-Canada TV series to be broadcast on a major U.S. network, "Just for Laughs" incorporates practical jokes, hidden cameras and the spontaneous reaction of unsuspecting "victims" to cut across cultural boundaries of humor. The series is seen in 125 countries around the world, including England, France, Italy, Germany and Canada, among others.

The first made-for-Canada TV series to be broadcast on a major U.S. network, "Just for Laughs" incorporates practical jokes, hidden cameras and the spontaneous reaction of unsuspecting "victims" to cut across cultural boundaries of humor. The series is seen in 125 countries around the world, including England, France, Italy, Germany and Canada, among others.

The first made-for-Canada TV series to be broadcast on a major U.S. network, "Just for Laughs" incorporates practical jokes, hidden cameras and the spontaneous reaction of unsuspecting "victims" to cut across cultural boundaries of humor. The series is seen in 125 countries around the world, including England, France, Italy, Germany and Canada, among others.

Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?

Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?

Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

The Conners continue to face the daily struggles of life in Lanford, grappling with parenthood, dating, financial pressures and aging in working-class America; with love, humor and perseverance, the family prevails.

Doug is disappointed when Carrie isn't jealous of his beautiful trainee; Arthur feels he's been scammed when he orders a gravestone.

Carrie is embarrassed by Doug when he shows up unexpectedly and famished at her boss's elegant "drinks-only" cocktail party.

Carrie befriends her annoying neighbors so that their week at a Hamptons time-share does not go unused; Arthur develops a nasty rash.

Doug convinces cousin Danny (Gary Valentine) to take Arthur for the weekend; Doug is hit by a baseball and meets a new friend (Bill Cosby) at Dr. Becker's (Ted Danson) office.

While the gang waits for the reopening of Stuart's comic book store Wolowitz gets some shocking news; Penny has trouble taking her own advice; Leonard and Raj think they spot Nathan Fillion at a restaurant.

Penny and Sheldon design an experiment - as a joke - to make participants fall in love; Howard and Bernadette get into trouble at the airport.

A magazine article only credits Sheldon in an article about a paper he co-wrote with Leonard; a blackout at Mrs. Wolowitz's results in a final dinner in her honor.

The Trades is a single-cam sitcom about refinery employees that balance the conflicting personalities of a small town with the antics of a stressful workplace.

Amy finds out that Sheldon applied for a one-way mission to colonize Mars; a trip to the pet store leads to a fight; Leonard has a surprise for Penny; Raj is busted while snooping in Emily's apartment.

A sudden turn of events forces the Conners to face the daily struggles of life in Lanford in a way they never have before.

While the gang waits for the reopening of Stuart's comic book store Wolowitz gets some shocking news; Penny has trouble taking her own advice; Leonard and Raj think they spot Nathan Fillion at a restaurant.

Penny and Sheldon design an experiment - as a joke - to make participants fall in love; Howard and Bernadette get into trouble at the airport.

Amy finds out that Sheldon applied for a one-way mission to colonize Mars; a trip to the pet store leads to a fight; Leonard has a surprise for Penny; Raj is busted while snooping in Emily's apartment.

The Trades is a single-cam sitcom about refinery employees that balance the conflicting personalities of a small town with the antics of a stressful workplace.

Doug is disappointed when Carrie isn't jealous of his beautiful trainee; Arthur feels he's been scammed when he orders a gravestone.

Carrie is embarrassed by Doug when he shows up unexpectedly and famished at her boss's elegant "drinks-only" cocktail party.

Carrie befriends her annoying neighbors so that their week at a Hamptons time-share does not go unused; Arthur develops a nasty rash.

Doug convinces cousin Danny (Gary Valentine) to take Arthur for the weekend; Doug is hit by a baseball and meets a new friend (Bill Cosby) at Dr. Becker's (Ted Danson) office.

The Trades is a single-cam sitcom about refinery employees that balance the conflicting personalities of a small town with the antics of a stressful workplace.

Mark takes on odd jobs, determined to find a way to pay for school; Darlene grapples with her emotions when she discovers her household is about to change dramatically.

A sudden turn of events forces the Conners to face the daily struggles of life in Lanford in a way they never have before.

David tries to buy the original R2-D2 after Hank buys a robot online.

Emma causes tension at the elementary school after a teacher leaves her in charge.

The women can't get rid of Hank from a girls-only event; Brent stocks a new drink and Wanda is attracted to its cardboard promotion.

At the Summer Solstice Deck Party, the locals compete for a seat in the sun, Brent sells popsicles and Karen and Davis must share a gun.

Taxi passengers win money by answering trivia questions.

Taxi passengers win money by answering trivia questions.

David tries to buy the original R2-D2 after Hank buys a robot online.

Emma causes tension at the elementary school after a teacher leaves her in charge.

The women can't get rid of Hank from a girls-only event; Brent stocks a new drink and Wanda is attracted to its cardboard promotion.

At the Summer Solstice Deck Party, the locals compete for a seat in the sun, Brent sells popsicles and Karen and Davis must share a gun.

Taxi passengers win money by answering trivia questions.

Taxi passengers win money by answering trivia questions.

David tries to buy the original R2-D2 after Hank buys a robot online.

Emma causes tension at the elementary school after a teacher leaves her in charge.

The women can't get rid of Hank from a girls-only event; Brent stocks a new drink and Wanda is attracted to its cardboard promotion.

At the Summer Solstice Deck Party, the locals compete for a seat in the sun, Brent sells popsicles and Karen and Davis must share a gun.

Darlene gets one surprise after another when David introduces his girlfriend at a parent-teacher conference and mentions that Mark and Harris will be spending the weekend with them; Dan hires Becky to help out at work.

Doug is disappointed when Carrie isn't jealous of his beautiful trainee; Arthur feels he's been scammed when he orders a gravestone.

Carrie is embarrassed by Doug when he shows up unexpectedly and famished at her boss's elegant "drinks-only" cocktail party.

Carrie befriends her annoying neighbors so that their week at a Hamptons time-share does not go unused; Arthur develops a nasty rash.

Doug convinces cousin Danny (Gary Valentine) to take Arthur for the weekend; Doug is hit by a baseball and meets a new friend (Bill Cosby) at Dr. Becker's (Ted Danson) office.

When Sheldon and Leonard are asked to speak at UC Berkeley, they take a detour in hope of meeting an idol; Raj and Amy try to settle a dispute between Howard and Bernadette with a game of pingpong.

Sheldon and Amy build a blanket fort - and come to a crossroads in their relationship; Wolowitz meets a half-brother he didn't know he had; Leonard and Penny have an argument during an appearance on Wil Wheaton's podcast.

The guys fight over what message Raj should write for NASA in case of alien contact; Penny has to decide between auditioning for a movie or keeping her pharmaceutical sales job.

Darlene gets one surprise after another when David introduces his girlfriend at a parent-teacher conference and mentions that Mark and Harris will be spending the weekend with them; Dan hires Becky to help out at work.

An email from the school banning certain Halloween costumes, including Mark's, sets off an argument between Dan and Darlene; Jackie introduces someone to the family at the Halloween party and insists that Dan vet him, but she immediately regrets it.

Joey confesses his true feelings for Rachel; Phoebe introduces Monica to her new boyfriend (Harry Van Gorkum).

Rachel devises a lie about her unborn child that she hopes will break the silence between her and Joey; Phoebe reads tea leaves and predicts she will soon encounter the man of her dreams.

Phoebe brings her annoyingly upbeat boyfriend to the 35th anniversary of Monica and Ross' parents, who urge Ross and pregnant Rachel to pretend to be married.

Mandy's attempt to help Missy with boys backfires when Mary finds out and Georgie is caught in the crossfire.

When Sheldon and Leonard are asked to speak at UC Berkeley, they take a detour in hope of meeting an idol; Raj and Amy try to settle a dispute between Howard and Bernadette with a game of pingpong.

Sheldon and Amy build a blanket fort - and come to a crossroads in their relationship; Wolowitz meets a half-brother he didn't know he had; Leonard and Penny have an argument during an appearance on Wil Wheaton's podcast.

Wolowitz questions his engineering skills after he and Sheldon can't get a toy drone to fly; a canceled flight puts Leonard's plans in jeopardy; Raj sets his parents against one another after he's cut off financially.

When Sheldon's and Leonard's mothers finally meet, personalities collide; Howard decides to do his share of the chores - with a little help from his friends.

The guys fight over what message Raj should write for NASA in case of alien contact; Penny has to decide between auditioning for a movie or keeping her pharmaceutical sales job.

An email from the school banning certain Halloween costumes, including Mark's, sets off an argument between Dan and Darlene; Jackie introduces someone to the family at the Halloween party and insists that Dan vet him, but she immediately regrets it.

When Sheldon and Leonard are asked to speak at UC Berkeley, they take a detour in hope of meeting an idol; Raj and Amy try to settle a dispute between Howard and Bernadette with a game of pingpong.

Sheldon and Amy build a blanket fort - and come to a crossroads in their relationship; Wolowitz meets a half-brother he didn't know he had; Leonard and Penny have an argument during an appearance on Wil Wheaton's podcast.

The guys fight over what message Raj should write for NASA in case of alien contact; Penny has to decide between auditioning for a movie or keeping her pharmaceutical sales job.

When Sheldon's and Leonard's mothers finally meet, personalities collide; Howard decides to do his share of the chores - with a little help from his friends.

Joey confesses his true feelings for Rachel; Phoebe introduces Monica to her new boyfriend (Harry Van Gorkum).

Rachel devises a lie about her unborn child that she hopes will break the silence between her and Joey; Phoebe reads tea leaves and predicts she will soon encounter the man of her dreams.

Phoebe brings her annoyingly upbeat boyfriend to the 35th anniversary of Monica and Ross' parents, who urge Ross and pregnant Rachel to pretend to be married.

Mandy's attempt to help Missy with boys backfires when Mary finds out and Georgie is caught in the crossfire.

Wolowitz questions his engineering skills after he and Sheldon can't get a toy drone to fly; a canceled flight puts Leonard's plans in jeopardy; Raj sets his parents against one another after he's cut off financially.

When Sheldon's and Leonard's mothers finally meet, personalities collide; Howard decides to do his share of the chores - with a little help from his friends.

Darlene gets one surprise after another when David introduces his girlfriend at a parent-teacher conference and mentions that Mark and Harris will be spending the weekend with them; Dan hires Becky to help out at work.

An email from the school banning certain Halloween costumes, including Mark's, sets off an argument between Dan and Darlene; Jackie introduces someone to the family at the Halloween party and insists that Dan vet him, but she immediately regrets it.

As a windstorm creates havoc, Lacey's sign on her rooftop begins to lose all of the letters one by one.

Brent has an opportunity to pursue his dream, but his weekly disappearances causes rumours to circulate.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Taxi passengers win money by answering trivia questions.

Taxi passengers win money by answering trivia questions.

As a windstorm creates havoc, Lacey's sign on her rooftop begins to lose all of the letters one by one.

Brent has an opportunity to pursue his dream, but his weekly disappearances causes rumours to circulate.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Taxi passengers win money by answering trivia questions.

Taxi passengers win money by answering trivia questions.

As a windstorm creates havoc, Lacey's sign on her rooftop begins to lose all of the letters one by one.

Brent has an opportunity to pursue his dream, but his weekly disappearances causes rumours to circulate.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

Lacey and Brent help Hank build a zip-line downtown; Davis and Karen crack down on the free corner; Oscar and Emma win a free robot vacuum.

When Geena learns that D.J. hasn't been taking Mary to church, she insists they go as a family; Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

Joey confesses his true feelings for Rachel; Phoebe introduces Monica to her new boyfriend (Harry Van Gorkum).

Rachel devises a lie about her unborn child that she hopes will break the silence between her and Joey; Phoebe reads tea leaves and predicts she will soon encounter the man of her dreams.

Phoebe brings her annoyingly upbeat boyfriend to the 35th anniversary of Monica and Ross' parents, who urge Ross and pregnant Rachel to pretend to be married.

Mandy's attempt to help Missy with boys backfires when Mary finds out and Georgie is caught in the crossfire.

While facing dramatic changes in his relationship with Amy, Sheldon pushes Penny and Leonard to choose a wedding date.

Sheldon struggles to understand what is going on with Amy; Penny must decide if she can get past Leonard's bad behavior.

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags"; Bernadette feels bad about keeping a secret.

When Geena learns that D.J. hasn't been taking Mary to church, she insists they go as a family; Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

A member of the family makes a life-changing announcement; Dan suspects Becky isn't holding up her end of the bargain with regard to her drinking; Darlene continues to look for a job; Jackie offers English lessons to a busboy.

When Soap Opera Digest requests an interview, Joey enlists his friends to make sure he does not say anything that could cost him his role.

During her baby shower, Rachel realizes she is unprepared to be a mother and accepts her mother's (Marlo Thomas) offer to move in to help with the child.

A food critic blasts Monica's cooking in a newspaper review; a cute saleswoman riles Rachel when she flirts with Ross; Phoebe coaches Chandler for a job interview.

Years after a gambling scandal ruined his reputation, former football star Reggie Dinkins is running out of time to enter the Hall of Fame. In one last shot at redemption, Reggie hires Arthur Tobin, a disgraced filmmaker, to make a documentary reclaiming his legacy, recruiting his former teammate Rusty and ex-wife-turned-manager Monica for help. Though Reggie and Tobin don't get along at first, this team of underdogs comes together when they realize that Reggie isn't the only one searching for a comeback.

While facing dramatic changes in his relationship with Amy, Sheldon pushes Penny and Leonard to choose a wedding date.

Sheldon struggles to understand what is going on with Amy; Penny must decide if she can get past Leonard's bad behavior.

A flat tire during Leonard's bachelor party weekend in Mexico tests the guys' skills; Penny is compelled to tell her family that she and Leonard eloped.

An impending change to his living arrangements inspires Sheldon to revert to 2003, before he met Penny and Leonard; Raj and Howard form a band.

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags"; Bernadette feels bad about keeping a secret.

A member of the family makes a life-changing announcement; Dan suspects Becky isn't holding up her end of the bargain with regard to her drinking; Darlene continues to look for a job; Jackie offers English lessons to a busboy.

While facing dramatic changes in his relationship with Amy, Sheldon pushes Penny and Leonard to choose a wedding date.

Sheldon struggles to understand what is going on with Amy; Penny must decide if she can get past Leonard's bad behavior.

Leonard tries to ease Penny's mind; Sheldon plans a special episode of "Fun With Flags"; Bernadette feels bad about keeping a secret.

An impending change to his living arrangements inspires Sheldon to revert to 2003, before he met Penny and Leonard; Raj and Howard form a band.

When Soap Opera Digest requests an interview, Joey enlists his friends to make sure he does not say anything that could cost him his role.

During her baby shower, Rachel realizes she is unprepared to be a mother and accepts her mother's (Marlo Thomas) offer to move in to help with the child.

A food critic blasts Monica's cooking in a newspaper review; a cute saleswoman riles Rachel when she flirts with Ross; Phoebe coaches Chandler for a job interview.

Years after a gambling scandal ruined his reputation, former football star Reggie Dinkins is running out of time to enter the Hall of Fame. In one last shot at redemption, Reggie hires Arthur Tobin, a disgraced filmmaker, to make a documentary reclaiming his legacy, recruiting his former teammate Rusty and ex-wife-turned-manager Monica for help. Though Reggie and Tobin don't get along at first, this team of underdogs comes together when they realize that Reggie isn't the only one searching for a comeback.

A flat tire during Leonard's bachelor party weekend in Mexico tests the guys' skills; Penny is compelled to tell her family that she and Leonard eloped.

An impending change to his living arrangements inspires Sheldon to revert to 2003, before he met Penny and Leonard; Raj and Howard form a band.

When Geena learns that D.J. hasn't been taking Mary to church, she insists they go as a family; Mark's attempt to conduct an unbiased survey on the upcoming election for his school project goes south when Jackie volunteers to help.

A member of the family makes a life-changing announcement; Dan suspects Becky isn't holding up her end of the bargain with regard to her drinking; Darlene continues to look for a job; Jackie offers English lessons to a busboy.

A big city girl from Toronto moves in to run the coffee shop next door to the Corner Gas station.

A tax man comes to audit the Corner Gas business records; Lacey's approach to selling coffee doesn't fly with the locals.

Wanda helps Brent investigate his nightmares about being attacked by Michael J. Fox.

Brent uses a drone to harass Oscar; Wanda and Emma attempt to measure the intelligence of turkeys.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Taxi passengers win money by answering trivia questions.

A big city girl from Toronto moves in to run the coffee shop next door to the Corner Gas station.

A tax man comes to audit the Corner Gas business records; Lacey's approach to selling coffee doesn't fly with the locals.

Wanda helps Brent investigate his nightmares about being attacked by Michael J. Fox.

Brent uses a drone to harass Oscar; Wanda and Emma attempt to measure the intelligence of turkeys.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Taxi passengers win money by answering trivia questions.

A big city girl from Toronto moves in to run the coffee shop next door to the Corner Gas station.

A tax man comes to audit the Corner Gas business records; Lacey's approach to selling coffee doesn't fly with the locals.

Wanda helps Brent investigate his nightmares about being attacked by Michael J. Fox.

Brent uses a drone to harass Oscar; Wanda and Emma attempt to measure the intelligence of turkeys.

Jackie convinces Dan to build a chicken coop in the backyard so the family can eat organic eggs; Becky meets with Andrea for the first time since the surrogacy mishap; Darlene deals with a sleazy customer at her casino job.

When Soap Opera Digest requests an interview, Joey enlists his friends to make sure he does not say anything that could cost him his role.

During her baby shower, Rachel realizes she is unprepared to be a mother and accepts her mother's (Marlo Thomas) offer to move in to help with the child.

A food critic blasts Monica's cooking in a newspaper review; a cute saleswoman riles Rachel when she flirts with Ross; Phoebe coaches Chandler for a job interview.

Years after a gambling scandal ruined his reputation, former football star Reggie Dinkins is running out of time to enter the Hall of Fame. In one last shot at redemption, Reggie hires Arthur Tobin, a disgraced filmmaker, to make a documentary reclaiming his legacy, recruiting his former teammate Rusty and ex-wife-turned-manager Monica for help. Though Reggie and Tobin don't get along at first, this team of underdogs comes together when they realize that Reggie isn't the only one searching for a comeback.

Barry Kripke expresses interest in Amy while leading a fencing lesson for the guys; when Stuart tries to attract female customers to the store, Penny, Amy and Bernadette help out.

Leonard and Sheldon go to great lengths to secure the helium they need during a nation-wide shortage; Bernadette and Penny try to find Amy a new man on a dating app.

Sheldon struggles to keep his emotions in check when he is interviewed for a documentary about Spock; Penny and Leonard make a surprising discovery; Wolowitz and Bernadette get into a disagreement about remodeling his childhood home.

Jackie convinces Dan to build a chicken coop in the backyard so the family can eat organic eggs; Becky meets with Andrea for the first time since the surrogacy mishap; Darlene deals with a sleazy customer at her casino job.

Dan questions Peter's motives when he learns about the pricey Christmas gift Jackie purchased for her new, unemployed beau; Mark and Mary write up their Christmas wish lists; Darlene receives advice from an unlikely source.

Sheldon finds himself in a fierce competition with Paige when their mothers force them to attend Vacation Bible School; George is furious after Georgie makes a questionable purchase.

Dale and Meemaw work out relationship issues while playing Dungeons and Dragons with Sheldon and Missy; Mary and George take a trip with coach Wilkins and his wife; Georgie's girlfriend thinks she's pregnant.

College orientation does not go as Sheldon planned; Mary is invited to a party when she's mistaken for a university student; George Sr. helps Pastor Jeff set up a children's nursery.

Devoted nurse Alex has just been promoted to Supervising Nurse in the emergency department at St. Denis Medical Center in Oregon. She works alongside an eclectic team of underfunded yet dedicated doctors, nurses and hospital staff, including her boss, Joyce, who wants nothing more than to turn the hospital into an international medical destination, and Dr. Ron, who's done it all, seen it all and is pretty much over it all. They're all doing their best not to lose their patience in a hospital overrun with patients - while caring for everyone who comes in the door, including each other.

Old friends JD and Turk scrub in together for the first time in a long time, learning that medicine has changed; interns have changed; but their bromance has stood the test of time.

Leonard and Sheldon go to great lengths to secure the helium they need during a nation-wide shortage; Bernadette and Penny try to find Amy a new man on a dating app.

Sheldon, Wolowitz and Koothrappali post an ad online to find a new girlfriend for Sheldon; Penny and Bernadette decide to spy when Amy is secretive about who she is dating.

Amy and Sheldon spend Thanksgiving at the aquarium - as friends; Wolowitz volunteers at the soup kitchen with Raj, Emily and Bernadette; Penny realizes that Leonard knows her better than she thought.

Sheldon struggles to keep his emotions in check when he is interviewed for a documentary about Spock; Penny and Leonard make a surprising discovery; Wolowitz and Bernadette get into a disagreement about remodeling his childhood home.

Dan questions Peter's motives when he learns about the pricey Christmas gift Jackie purchased for her new, unemployed beau; Mark and Mary write up their Christmas wish lists; Darlene receives advice from an unlikely source.

Barry Kripke expresses interest in Amy while leading a fencing lesson for the guys; when Stuart tries to attract female customers to the store, Penny, Amy and Bernadette help out.

Leonard and Sheldon go to great lengths to secure the helium they need during a nation-wide shortage; Bernadette and Penny try to find Amy a new man on a dating app.

Sheldon struggles to keep his emotions in check when he is interviewed for a documentary about Spock; Penny and Leonard make a surprising discovery; Wolowitz and Bernadette get into a disagreement about remodeling his childhood home.

Amy and Sheldon spend Thanksgiving at the aquarium - as friends; Wolowitz volunteers at the soup kitchen with Raj, Emily and Bernadette; Penny realizes that Leonard knows her better than she thought.

Sheldon finds himself in a fierce competition with Paige when their mothers force them to attend Vacation Bible School; George is furious after Georgie makes a questionable purchase.

Dale and Meemaw work out relationship issues while playing Dungeons and Dragons with Sheldon and Missy; Mary and George take a trip with coach Wilkins and his wife; Georgie's girlfriend thinks she's pregnant.

Devoted nurse Alex has just been promoted to Supervising Nurse in the emergency department at St. Denis Medical Center in Oregon. She works alongside an eclectic team of underfunded yet dedicated doctors, nurses and hospital staff, including her boss, Joyce, who wants nothing more than to turn the hospital into an international medical destination, and Dr. Ron, who's done it all, seen it all and is pretty much over it all. They're all doing their best not to lose their patience in a hospital overrun with patients - while caring for everyone who comes in the door, including each other.

Old friends JD and Turk scrub in together for the first time in a long time, learning that medicine has changed; interns have changed; but their bromance has stood the test of time.

Sheldon, Wolowitz and Koothrappali post an ad online to find a new girlfriend for Sheldon; Penny and Bernadette decide to spy when Amy is secretive about who she is dating.

Amy and Sheldon spend Thanksgiving at the aquarium - as friends; Wolowitz volunteers at the soup kitchen with Raj, Emily and Bernadette; Penny realizes that Leonard knows her better than she thought.

Jackie convinces Dan to build a chicken coop in the backyard so the family can eat organic eggs; Becky meets with Andrea for the first time since the surrogacy mishap; Darlene deals with a sleazy customer at her casino job.

Dan questions Peter's motives when he learns about the pricey Christmas gift Jackie purchased for her new, unemployed beau; Mark and Mary write up their Christmas wish lists; Darlene receives advice from an unlikely source.

Lacey offers free Pilates classes; Oscar takes steps to avoid being buried in a cheap looking coffin.

Brent agrees to baby-sit Wanda's troubled 6-year old son, Tanner, to impress Lacey.

A big city girl from Toronto moves in to run the coffee shop next door to the Corner Gas station.

A tax man comes to audit the Corner Gas business records; Lacey's approach to selling coffee doesn't fly with the locals.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Lacey offers free Pilates classes; Oscar takes steps to avoid being buried in a cheap looking coffin.

Brent agrees to baby-sit Wanda's troubled 6-year old son, Tanner, to impress Lacey.

A big city girl from Toronto moves in to run the coffee shop next door to the Corner Gas station.

A tax man comes to audit the Corner Gas business records; Lacey's approach to selling coffee doesn't fly with the locals.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Unsuspecting members of the public climbing into an apparently normal taxicab, only to find themselves on national television, with a chance to win a small fortune; hosted by Adam Growe.

Lacey offers free Pilates classes; Oscar takes steps to avoid being buried in a cheap looking coffin.

Brent agrees to baby-sit Wanda's troubled 6-year old son, Tanner, to impress Lacey.

A big city girl from Toronto moves in to run the coffee shop next door to the Corner Gas station.

A tax man comes to audit the Corner Gas business records; Lacey's approach to selling coffee doesn't fly with the locals.

Becky helps Harris keep a secret from Darlene, which causes a rift between the sisters; Jackie supports Peter with his project; Dan and an old friend reunite.

Sheldon finds himself in a fierce competition with Paige when their mothers force them to attend Vacation Bible School; George is furious after Georgie makes a questionable purchase.

Dale and Meemaw work out relationship issues while playing Dungeons and Dragons with Sheldon and Missy; Mary and George take a trip with coach Wilkins and his wife; Georgie's girlfriend thinks she's pregnant.

College orientation does not go as Sheldon planned; Mary is invited to a party when she's mistaken for a university student; George Sr. helps Pastor Jeff set up a children's nursery.

Devoted nurse Alex has just been promoted to Supervising Nurse in the emergency department at St. Denis Medical Center in Oregon. She works alongside an eclectic team of underfunded yet dedicated doctors, nurses and hospital staff, including her boss, Joyce, who wants nothing more than to turn the hospital into an international medical destination, and Dr. Ron, who's done it all, seen it all and is pretty much over it all. They're all doing their best not to lose their patience in a hospital overrun with patients - while caring for everyone who comes in the door, including each other.

Sheldon has a song stuck in his head; despite their awkward date, Amy asks Dave over for dinner; Koothrappali and Wolowitz are obsessed with a fan of their band.

After dating for more than five years, Amy and Sheldon spend the night together for the first time; Leonard, Wolowitz, and Koothrappali must decide what to do with an extra movie ticket.

Leonard agrees to meet with a psychiatrist (Jane Kaczmarek) on Penny's behalf; Sheldon and Koothrappali work together on an astronomical discovery; Wolowitz and Bernadette struggle with their feelings when Stuart moves out.

Becky helps Harris keep a secret from Darlene, which causes a rift between the sisters; Jackie supports Peter with his project; Dan and an old friend reunite.

When Dan gets injured while covering D.J.'s vending machine route, the decision to sue the company could cost D.J. his job; Jackie is appalled when Becky seeks life coaching from her nemesis.

Sheldon's first day of college is derailed by his new philosophy teacher, professor Ericson; Mary and Brenda live vicariously through Missy's first day of middle school.

Meemaw takes matters into her own hands when Sheldon's philosophy teacher sends him into a tailspin; George Sr. learns Georgie has been cutting class.

Sheldon and George Sr. have dinner with President Hagemeyer and a university benefactor; Georgie gives Missy some brotherly advice when Mary won't let her go to the school dance; Dale and June convince Meemaw to attend their son's wedding.

Sheldon campaigns to become Dr. Linkletter's lab assistant; Georgie enlists the help of Mr. Lundy, the drama teacher, for a business venture.

Sheldon has a song stuck in his head; despite their awkward date, Amy asks Dave over for dinner; Koothrappali and Wolowitz are obsessed with a fan of their band.

After dating for more than five years, Amy and Sheldon spend the night together for the first time; Leonard, Wolowitz, and Koothrappali must decide what to do with an extra movie ticket.

After dealing with Sheldon while he was sick, Leonard, Penny and the gang attempt to treat themselves to a Sheldon-free weekend.

Sheldon's excitement about his Meemaw's visit fades when she butts heads with Amy; Raj questions his relationship with Emily after meeting someone new.

Julian and Ricky find that nothing is as they left it when they get out of jail and return to the park.

Ricky struggles to keep his family together despite not being allowed in the park; Julian and Bubbles try to revive business.

Sheldon has a song stuck in his head; despite their awkward date, Amy asks Dave over for dinner; Koothrappali and Wolowitz are obsessed with a fan of their band.

After dating for more than five years, Amy and Sheldon spend the night together for the first time; Leonard, Wolowitz, and Koothrappali must decide what to do with an extra movie ticket.

Leonard agrees to meet with a psychiatrist (Jane Kaczmarek) on Penny's behalf; Sheldon and Koothrappali work together on an astronomical discovery; Wolowitz and Bernadette struggle with their feelings when Stuart moves out.

Sheldon's excitement about his Meemaw's visit fades when she butts heads with Amy; Raj questions his relationship with Emily after meeting someone new.

Julian and Ricky find that nothing is as they left it when they get out of jail and return to the park.

Ricky struggles to keep his family together despite not being allowed in the park; Julian and Bubbles try to revive business.

Sheldon and George Sr. have dinner with President Hagemeyer and a university benefactor; Georgie gives Missy some brotherly advice when Mary won't let her go to the school dance; Dale and June convince Meemaw to attend their son's wedding.

Sheldon campaigns to become Dr. Linkletter's lab assistant; Georgie enlists the help of Mr. Lundy, the drama teacher, for a business venture.

After dealing with Sheldon while he was sick, Leonard, Penny and the gang attempt to treat themselves to a Sheldon-free weekend.

Sheldon's excitement about his Meemaw's visit fades when she butts heads with Amy; Raj questions his relationship with Emily after meeting someone new.

Becky helps Harris keep a secret from Darlene, which causes a rift between the sisters; Jackie supports Peter with his project; Dan and an old friend reunite.

When Dan gets injured while covering D.J.'s vending machine route, the decision to sue the company could cost D.J. his job; Jackie is appalled when Becky seeks life coaching from her nemesis.

Lacey offers free Pilates classes; Oscar takes steps to avoid being buried in a cheap looking coffin.

Brent agrees to baby-sit Wanda's troubled 6-year old son, Tanner, to impress Lacey.

Rookie cop Karen makes it her mission to find out who spray-painted "Grad 68" on the water tower.

Dog River decides to put up a giant landmark; Oscar struggles to stop a love-struck admirer from ruining his marriage.

When Lacey's ex-fiance from Toronto comes to visit, the people of Dog River take matters into their own hands to protect her from her past.

Dog River prepares for its annual talent show; Brent's cousin Carl, whom everyone seems to love, except Brent, comes for a visit.

Amy and Sheldon host a Valentine's Day edition of Fun With Flags; Penny and Leonard wrestle with getting older; Howard and Bernadette make a discovery in their hot tub; Raj is torn between Emily and another woman.

The gang celebrates news of Bernadette's pregnancy by singing karaoke; Wolowitz's reaction to the pregnancy announcement worries Bernadette; Wolowitz believes he needs to make more money to support his growing family.

For the first time in nine years, the gang celebrates Sheldon's birthday - surprising him with a special guest.

Leonard, Sheldon and Wolowitz file for a patent on their new invention; Penny, Amy and Bernadette give dating advice to Koothrappali after his breakup with Emily.

Sheldon makes a surprise revelation when Amy buys him a new laptop; Leonard and Wolowitz get sold out by Koothrappali after lying to their wives to attend a movie screening.

Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Koothrappali goes all out with pregnancy gifts.

During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

The gang runs into Penny's old boyfriend while out at a wine bar; Bernadette spends an evening with Sheldon; Koothrappali's introduction of his new girlfriend doesn't go as planned.

Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy; Penny has a difficult time connecting with Leonard's visiting mother.

Leonard's recently divorced parents and Sheldon's devoutly religious mother visit; when they are contacted about their guidance system, Wolowitz and Koothrappali think the government is after them.

The group struggles through an awkward morning after Sheldon's mother and Leonard's father spend an evening together; Penny's family arrives.

Wolowitz has a meeting with Colonel Williams, a representative from the Air Force Department of Material Command.

Sheldon tries to stay awake with an energy drink as the gang races to finish its government project on time; Penny and Amy attend a gathering at Bert the Geologist's house; Koothrappali learns Bernadette's true feeling about her pregnancy.

After her apartment floods, Amy suggests that she and Sheldon move in together; Koothrappali finds out the gender of Howard and Bernadette's baby before they do.

Amy and Sheldon host a Valentine's Day edition of Fun With Flags; Penny and Leonard wrestle with getting older; Howard and Bernadette make a discovery in their hot tub; Raj is torn between Emily and another woman.

The gang celebrates news of Bernadette's pregnancy by singing karaoke; Wolowitz's reaction to the pregnancy announcement worries Bernadette; Wolowitz believes he needs to make more money to support his growing family.

For the first time in nine years, the gang celebrates Sheldon's birthday - surprising him with a special guest.

Leonard, Sheldon and Wolowitz file for a patent on their new invention; Penny, Amy and Bernadette give dating advice to Koothrappali after his breakup with Emily.

Sheldon makes a surprise revelation when Amy buys him a new laptop; Leonard and Wolowitz get sold out by Koothrappali after lying to their wives to attend a movie screening.

Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Koothrappali goes all out with pregnancy gifts.

During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

The gang runs into Penny's old boyfriend while out at a wine bar; Bernadette spends an evening with Sheldon; Koothrappali's introduction of his new girlfriend doesn't go as planned.

Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy; Penny has a difficult time connecting with Leonard's visiting mother.

Leonard's recently divorced parents and Sheldon's devoutly religious mother visit; when they are contacted about their guidance system, Wolowitz and Koothrappali think the government is after them.

The group struggles through an awkward morning after Sheldon's mother and Leonard's father spend an evening together; Penny's family arrives.

Wolowitz has a meeting with Colonel Williams, a representative from the Air Force Department of Material Command.

An ensemble of British actors and comedians performs in a series of sketches alongside celebrity guest hosts and popular musical acts in a UK version of the groundbreaking live show.

Amy and Sheldon host a Valentine's Day edition of Fun With Flags; Penny and Leonard wrestle with getting older; Howard and Bernadette make a discovery in their hot tub; Raj is torn between Emily and another woman.

The gang celebrates news of Bernadette's pregnancy by singing karaoke; Wolowitz's reaction to the pregnancy announcement worries Bernadette; Wolowitz believes he needs to make more money to support his growing family.

For the first time in nine years, the gang celebrates Sheldon's birthday - surprising him with a special guest.

Leonard, Sheldon and Wolowitz file for a patent on their new invention; Penny, Amy and Bernadette give dating advice to Koothrappali after his breakup with Emily.

Sheldon makes a surprise revelation when Amy buys him a new laptop; Leonard and Wolowitz get sold out by Koothrappali after lying to their wives to attend a movie screening.

Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Koothrappali goes all out with pregnancy gifts.

During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

The gang runs into Penny's old boyfriend while out at a wine bar; Bernadette spends an evening with Sheldon; Koothrappali's introduction of his new girlfriend doesn't go as planned.

Sheldon wants to go to a movie screening, so he pays Stuart to spend the day with Amy; Penny has a difficult time connecting with Leonard's visiting mother.

Leonard's recently divorced parents and Sheldon's devoutly religious mother visit; when they are contacted about their guidance system, Wolowitz and Koothrappali think the government is after them.

The group struggles through an awkward morning after Sheldon's mother and Leonard's father spend an evening together; Penny's family arrives.

Wolowitz has a meeting with Colonel Williams, a representative from the Air Force Department of Material Command.

Sheldon tries to stay awake with an energy drink as the gang races to finish its government project on time; Penny and Amy attend a gathering at Bert the Geologist's house; Koothrappali learns Bernadette's true feeling about her pregnancy.

After her apartment floods, Amy suggests that she and Sheldon move in together; Koothrappali finds out the gender of Howard and Bernadette's baby before they do.

Davis tries to keep up with Brent; Lacey tries to prove she has community spirit by trying to save one of the town's historic landmarks.

Brent develops a grudge for an out-of-town comedian who performs at a comedy night in Dog River; Hank is star-struck by the guy and arranges to be the M.C. for the night.

Brent puts a sign with slogans in front of the gas station and coffee shop; Brent and Emma worry about Oscar's memory.

The Dog River hockey team finds itself at a crossroads; Brent is a great goalie and is being taken for granted by his teammates; when an offer from a rival team comes his way, he has a decision to make.

On the way to the Grey Cup, Brent considers his real feelings for Lacey.

Brent and Lacey try to figure out their relationship; Emma's on the warpath.

Monica and Phoebe make a bet after Rachel passes her delivery date; Chandler falls asleep at the premiere screening of Joey's new film.

Rachel goes into labor, enduring endless pain while anxious Ross hovers nearby and her waiting friends wreak havoc in the hospital.

After Rachel gives birth to her baby, she must confront relationship issues around her.

Joey finds himself engaged to Rachel soon after she delivers her baby girl, while Phoebe assumes Ross is the one who proposed; Joey sneaks a peek as Rachel tries unsuccessfully to nurse; Monica and Chandler retire to a supply closet for privacy.

Joey seeks forgiveness from Ross, while Rachel tries to quell Emma's incessant crying.

Emma's pediatrician drops her as a patient because of Rachel's constant calls.

Monica fears Chandler has a sexual fetish involving sharks; Phoebe fears losing her boyfriend.

While Phoebe and Joey wait at a fancy restaurant to celebrate Phoebe's birthday, Rachel is afraid to leave her infant with a babysitter; Monica and Chandler also fail to arrive on time after they fight over Chandler's urge to resume smoking.

Ross mocks Rachel's new male nanny (Freddie Prinze Jr.); Chandler becomes upset when Monica says that somebody from her job is the funniest guy she's ever met.

Chandler and Joey find a videotape while checking out Richard's apartment; Ross sings Emma an off-color lullaby.

Rachel has a bone to pick with her self-centered sister (Christina Applegate) on Thanksgiving; Monica protects her good wedding china; Joey forgets to join his TV cast mates for the Thanksgiving parade.

Rachel impulsively gives her telephone number to a handsome guy but worries he will call when Ross is there.

Monica fears the worst when she learns Chandler will be spending Christmas in Tulsa working on a deadline with a beautiful co-worker (Selma Blair).

When Rachel visits her workplace to show off baby Emma, she is surprised to find a handsome temporary worker, Gavin, who has been doing her job while she was on maternity leave; their immediate war of wills prompts Rachel to make a rash decision that she could regret; Joey arranges for Phoebe to get a job as an extra on his daytime drama series, but she wreaks havoc on the set. And, having quit his job, Chandler must get another, fast, because Monica desperately wants a family.

Monica and Phoebe make a bet after Rachel passes her delivery date; Chandler falls asleep at the premiere screening of Joey's new film.

Rachel goes into labor, enduring endless pain while anxious Ross hovers nearby and her waiting friends wreak havoc in the hospital.

After Rachel gives birth to her baby, she must confront relationship issues around her.

Joey finds himself engaged to Rachel soon after she delivers her baby girl, while Phoebe assumes Ross is the one who proposed; Joey sneaks a peek as Rachel tries unsuccessfully to nurse; Monica and Chandler retire to a supply closet for privacy.

Joey seeks forgiveness from Ross, while Rachel tries to quell Emma's incessant crying.

Emma's pediatrician drops her as a patient because of Rachel's constant calls.

Monica fears Chandler has a sexual fetish involving sharks; Phoebe fears losing her boyfriend.

While Phoebe and Joey wait at a fancy restaurant to celebrate Phoebe's birthday, Rachel is afraid to leave her infant with a babysitter; Monica and Chandler also fail to arrive on time after they fight over Chandler's urge to resume smoking.

Ross mocks Rachel's new male nanny (Freddie Prinze Jr.); Chandler becomes upset when Monica says that somebody from her job is the funniest guy she's ever met.

Chandler and Joey find a videotape while checking out Richard's apartment; Ross sings Emma an off-color lullaby.

Rachel has a bone to pick with her self-centered sister (Christina Applegate) on Thanksgiving; Monica protects her good wedding china; Joey forgets to join his TV cast mates for the Thanksgiving parade.

Rachel impulsively gives her telephone number to a handsome guy but worries he will call when Ross is there.

Monica fears the worst when she learns Chandler will be spending Christmas in Tulsa working on a deadline with a beautiful co-worker (Selma Blair).

When Rachel visits her workplace to show off baby Emma, she is surprised to find a handsome temporary worker, Gavin, who has been doing her job while she was on maternity leave; their immediate war of wills prompts Rachel to make a rash decision that she could regret; Joey arranges for Phoebe to get a job as an extra on his daytime drama series, but she wreaks havoc on the set. And, having quit his job, Chandler must get another, fast, because Monica desperately wants a family.

Monica and Phoebe make a bet after Rachel passes her delivery date; Chandler falls asleep at the premiere screening of Joey's new film.

Rachel goes into labor, enduring endless pain while anxious Ross hovers nearby and her waiting friends wreak havoc in the hospital.

After Rachel gives birth to her baby, she must confront relationship issues around her.

Joey finds himself engaged to Rachel soon after she delivers her baby girl, while Phoebe assumes Ross is the one who proposed; Joey sneaks a peek as Rachel tries unsuccessfully to nurse; Monica and Chandler retire to a supply closet for privacy.

Joey seeks forgiveness from Ross, while Rachel tries to quell Emma's incessant crying.

Emma's pediatrician drops her as a patient because of Rachel's constant calls.

Monica fears Chandler has a sexual fetish involving sharks; Phoebe fears losing her boyfriend.

While Phoebe and Joey wait at a fancy restaurant to celebrate Phoebe's birthday, Rachel is afraid to leave her infant with a babysitter; Monica and Chandler also fail to arrive on time after they fight over Chandler's urge to resume smoking.

Ross mocks Rachel's new male nanny (Freddie Prinze Jr.); Chandler becomes upset when Monica says that somebody from her job is the funniest guy she's ever met.

Chandler and Joey find a videotape while checking out Richard's apartment; Ross sings Emma an off-color lullaby.

Rachel has a bone to pick with her self-centered sister (Christina Applegate) on Thanksgiving; Monica protects her good wedding china; Joey forgets to join his TV cast mates for the Thanksgiving parade.

Rachel impulsively gives her telephone number to a handsome guy but worries he will call when Ross is there.

Monica fears the worst when she learns Chandler will be spending Christmas in Tulsa working on a deadline with a beautiful co-worker (Selma Blair).

When Rachel visits her workplace to show off baby Emma, she is surprised to find a handsome temporary worker, Gavin, who has been doing her job while she was on maternity leave; their immediate war of wills prompts Rachel to make a rash decision that she could regret; Joey arranges for Phoebe to get a job as an extra on his daytime drama series, but she wreaks havoc on the set. And, having quit his job, Chandler must get another, fast, because Monica desperately wants a family.

Rookie cop Karen makes it her mission to find out who spray-painted "Grad 68" on the water tower.

Dog River decides to put up a giant landmark; Oscar struggles to stop a love-struck admirer from ruining his marriage.

Pranks with blind cactus trip, drunk spouse stop & pantsless Segway chase.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Taxi passengers win money by answering trivia questions.

Unsuspecting taxi cab passengers answer trivia questions posed by host Ben Bailey; the passengers may reach their destination with cold hard cash or walk away empty-handed.

Rookie cop Karen makes it her mission to find out who spray-painted "Grad 68" on the water tower.

Dog River decides to put up a giant landmark; Oscar struggles to stop a love-struck admirer from ruining his marriage.

Pranks with blind cactus trip, drunk spouse stop & pantsless Segway chase.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Taxi passengers win money by answering trivia questions.

Unsuspecting taxi cab passengers answer trivia questions posed by host Ben Bailey; the passengers may reach their destination with cold hard cash or walk away empty-handed.

Rookie cop Karen makes it her mission to find out who spray-painted "Grad 68" on the water tower.

Dog River decides to put up a giant landmark; Oscar struggles to stop a love-struck admirer from ruining his marriage.

Pranks with blind cactus trip, drunk spouse stop & pantsless Segway chase.

There's no sound, but there sure are plenty of laughs; Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

When Ben offers Mark free piano lessons, Darlene uses it as an opportunity to test his parenting skills; Jackie throws Becky a baby shower; Emilio continues his efforts to be part of the baby's life.

A greedy cross guard, a toy truck takeover and a woman dancing in water.

A convertible dog theft, a priest and a coffin, and a rollerblade purse snatch.

A police robot rebels, perfume goes flying and scouts sell laxative chocolate!

A mother in labor gets cheers, a baby flies from a stroller and a strongman smacks fans!

Things do not run smoothly when Amy moves in with Sheldon, and Leonard and Penny have to intervene; Howard and Bernadette find unexpected guests at their house when they decide to cancel their vacation plans.

Penny learns there are fans of her performance in "Serial Ape-ist" when she and Leonard attend a Comic Con event; Amy hosts a brunch at Penny's apartment; Wolowitz makes an impulsive purchase.

Amy lies about repairs being made to her apartment so she can continue living with Sheldon; Leonard lets Penny decorate Sheldon's old room.

When Ben offers Mark free piano lessons, Darlene uses it as an opportunity to test his parenting skills; Jackie throws Becky a baby shower; Emilio continues his efforts to be part of the baby's life.

As Darlene grapples with a life-changing offer from Ben, an unexpected conversation with David turns her world even more upside down; relationship problems lead Jackie to the bottom of the bottle; Dan delivers alarming news.

Arthur moves into his own apartment after Doug tells him how he feels about his eccentric behavior; Carrie is concerned that her father can't take care of himself.

A visit with Deacon's three-year-old son prompts Doug and Carrie think about having a baby; Arthur recalls the night Carrie was born.